基本信息
摘要：1,241,321. Testing elongate members. NORSEMAN (CABLE MEASUREMENTS) Ltd. June 26, 1968 [July 13, 1967], No.32398/67. Heading G1N and G1W. Apparatus for testing an elongate member 1 comprises three rollers 3, 5 spaced apart on a resilient beam 2 to engage the member and means for measuring the distortion of the beam 2 in response to deflection of the member by the roller 5 when displaced relative to the beam 2 by movement of an adjustment member 7 connected to a carrier 6a either by eccentric pivoting or sliding of the roller 5 on the carrier. Distortion of the beam 2 by bending may be due to tension in a rope 1 and may be measured by electrical resistance wire or foil strain gauges 12 in a bridge circuit or semi-conductor strain gauges with a meter or by a dial gauge 11 on a detachable arm 8. In the embodiment of Figs.1, 2, the roller 5 is carried by and is freely rotatable on an axle 6 rigid with and eccentric to a cylinder 6a which can be rotated relative to the beam 2 by a handle 7 through 180 degrees to deflect the rope 1. In the embodiment of Figs. 3, 4 (not shown) the cylinder 6a is replaced by a sprocket wheel driven through an endless chain by an electric motor secured to an extension of the beam 8 which is stopped by actuation of a micro-switch when the roller 5 has deflected the rope 1 sufficiently. The motor drives the chain through a worm and a worm-wheel secured to the shaft of a second sprocket wheel and the motor may be replaced by a hand wheel driving the worm. In the embodiment of Fig. 6, (not shown) the cylinder 6a is replaced by a crank wheel eccentrically connected to the roller 5 and operated hydraulically by a piston and cylinder. The deflector-roller may be at one end, Fig. 7 (not shown). As shown in Fig. 8 a deflector-roller 33 is freely mounted on a hub 34 supported on a rectangularly cross-sectioned portion 36 of a shaft 35, having one end 37 keyed to a beam 42 and the other end 38 in threaded engagement with a flanged handwheel 45 rotatably retained on the beam 42 by a thrust plate 46, whereby the roller 33 can be cammed upward by rotation of the wheel 45. Loadings on stay wires, endless rope conveyers and running ropes may be measured. Different size rollers can adapt the apparatus to various rope thicknesses and they may be coated with plastics to avoid damaging plastics protected wires.
摘要附图：
